..Here we confirm this possibility by using a simple mathematical model and suggest that more than one mechanism may account for the maintenance of genetic diversity observed by Nelson et al. in their system...

Takehito YoshidaDepartment of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, United States of AmericaPLoS Biol 5:e235. 2007

..Modeling suggests that rapid evolution may also confound experimental approaches to measuring interaction strength, but it identifies certain experimental designs as being more robust against potential confounding by rapid evolution...

Prey evolution on the time scale of predator-prey dynamics revealed by allele-specific quantitative PCR